Shear jamming and fragility in dense suspensions
| Autor: | Bulbul Chakraborty, Jeffrey F. Morris, Abhinendra Singh, Ryohei Seto, Morton M. Denn |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
0211 other engineering and technologies FOS: Physical sciences General Physics and Astronomy Jamming Fluid bearing 02 engineering and technology Condensed Matter - Soft Condensed Matter 01 natural sciences Contact force Physics::Fluid Dynamics Fragility Rheology 0103 physical sciences Shear stress General Materials Science 010306 general physics Condensed Matter - Statistical Mechanics 021101 geological & geomatics engineering Statistical Mechanics (cond-mat.stat-mech) Isotropy Fluid Dynamics (physics.flu-dyn) Mechanics Physics - Fluid Dynamics Condensed Matter::Soft Condensed Matter Shear (geology) Mechanics of Materials Soft Condensed Matter (cond-mat.soft) |
| Popis: | The phenomenon of shear-induced jamming is a factor in the complex rheological behavior of dense suspensions. Such shear-jammed states are fragile, i.e., they are not stable against applied stresses that are incompatible with the stress imposed to create them. This peculiar flow-history dependence of the stress response is due to flow-induced microstructures. To examine jammed states realized under constant shear stress, we perform dynamic simulations of non-Brownian particles with frictional contact forces and hydrodynamic lubrication forces. We find clear signatures that distinguish these fragile states from the more conventional isotropic jammed states. Supplementary Material: https://youtu.be/v5LKX8bpP-w |
| Databáze: | OpenAIRE |
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